Chili (Capsicum annuum L.) is a tropical crop belonging to Solanaceae family. It is used in food for pungency and red colour. Chili is one of the largest traded spices in the national and international markets. Pakistan is among the biggest producers of chili crop after India, China and Mexico. Chili is an important cash crop of Pakistan in general and Sindh province particularly. The main market for chilies is Kunri, which is located in Umar Kot District. Production of red chili in the province (Sindh) is approximately 80,000 ton per annum, which accounts for around 86 per cent of the total red chili production in Pakistan. In the world, 26 wild species of chili peppers/capsicum are known. Out of them five species are domesticated, which are known as C. annuum, C. chinense, C. frutescens, C. baccatum, and C. pubescens. Capsicum annuum L. and Capsicum frutescens L. are grown among them in Pakistan. It is eaten cooked and in processed form as salad in the world. In Pakistan, it is used in almost every dish in the kitchen.
History shows that chili
is known from pre-historic times in Peru and believed to have originated in the
tropical America. It is also said that chili has originated in the Latin
American regions of the New Mexico and Guatemala as a wild crop around 7500 BC,
as per the remains of the pre-historic Peru. Columbus carried chili seeds to
Spain in 1493. The cultivation of chili spread rapidly from Spain to Europe.
The Portuguese brought capsicum from Brazil to India during the year 1584.
Chili became popular in the whole of Asia rapidly and native Asians started
cultivating this crop as well. The south Asian climate suited this crop, and
since its introduction in 16th century chili has been increasingly cultivated
in south Asia (Sanusi and Ayinde, 2013. Inc: Khan Attaullah., Ali, Mubarik, and
Yasin Aqsa, (2020) Chili Cluster Feasibility and Transformation Study). Experts believe that some Capsicum species likely originated in
Mexico, but the general consensus is that the place of origin for the original
ancestors is the Amazon Basin in South America, which is mostly located in the
countries of Bolivia, Brazil, Peru, Colombia, Ecuador, Guyana, Suriname and
Venezuela. This region is mostly covered with dense tropical forests and is
home to many wild Capsicum species.
From there, chili spread to other parts of the world and became established in
other parts of the Americas long ago (https://www.spicemad.com/p/the-history-of-Chili-peppers.html). In Pakistan Chili is
the cheapest source used as spice in almost all sorts of dishes that are
prepared in the Kitchens all over the country. Besides the spiciness, the chili
has good nutritional and medicinal value.
Chili is a rich source
of vitamins and minerals. The spice has innumerable uses for commercial, nutritional
as well as medicinal purposes. It is used for preparation of oleoresin that has
great export potential and demand in the world market. The medicinal properties
of chili help to combat various diseases like cancer, heart attack and lung
diseases. Chilies are valued for their soothing effects on digestive system, relief
from symptoms of cold, sore throats and fever. Chilies (capsaicin) are also used
to alleviate pain. It is the most recommended medication for arthritis (Ziaf K.,
Iqbal Q. and Amjad M., Agri. Overview: Jan 02.2015. Pakissan.com).The
nutritional value of chili (excluding seeds) is given in the table below:
|
S.NO |
Items |
Value |
|
1 |
Water |
90
ml |
|
2 |
Protein |
2
g |
|
3 |
Fat |
0.5
g |
|
4 |
Carbohydrate |
6
g |
|
5 |
Fiber |
1
g |
|
6 |
Calcium |
20
mg |
|
7 |
Iron |
1
mg |
|
8 |
Vitamin
A potency |
Variable
(100-1200 IU) |
|
9 |
Thiamine |
0.06
mg |
|
10 |
Riboflavin |
0.08
mg |
|
11 |
Nicotinamide |
1
mg |
|
12 |
Ascorbic
Acid |
150
mg |
Source:
Tindall, H.D. (1979).Commercial vegetable growing, Oxford tropical handbooks.
However, the crop cultivation is not as easy as this entails many problems, which needs utmost care and management right from nursery production till harvesting.
Chili nursery raising in the country starts from the month of February and goes continued till the end of April and onward in various climatic regions, which is transplanted in the field after one month and in some places after one and a half month having 5-6 leaves. The use of seed rate also varies from region to region. In Punjab and KP provinces 500 grams seed is used per ha.
In Sindh, which is the major
producing province in Pakistan, 1.250-1.750 kg seed is planted for raising
nursery for planting a hectare of land. Another
method for transplantation is also used where 2-3 seeds are planted in a hole on
ridges that is locally called Chopa. In Sindh, the nursery raising of chili
starts from December and ends in the month of August while the transplantation
takes place after one month in the sequence.
In Baluchistan, nursery
is raised under plastic in December to January and transplanted in the month of March- April
while in some places; Nasirabad and adjacent areas; nursery is raised in the
month of August and transplanted in September. For nursery raising 500 grams of
seed is raised to plant one hectare of land. Besides nursery raising, direct
seeding is also done in the field where 3-4 seeds are sown in a hole. However, 750-875 grams seed is planted in a
hectare. This method is locally called Chondi.
Seed for nursery is
planted on raised beds. Clods, stones and other unnecessary materials are
removed from soil and well dried farm yard manure is mixed with soil during
preparation. Seed is planted in lines with a distance of 3-4 cm on 1 meter wide
and 3 meters long beds. One hundred and fifty gram seed is planted on each bed
to raise nursery. The lines are then covered with a thin layer of well rotten
and dried farm yard manure or fine sand. Afterwards, the seed bed is covered
with rice or wheat straw in hot areas like Sindh. The beds are irrigated with
sprinkle twice in a day; morning and evening. The nursery should be kept clean
from weeds. In case of disease attack spray of fungicides should be done. Chili
nursery raising, transplantation and harvesting times vary from region to
region, which is presented in the table below:
|
Province |
Nursery
raising |
Transplantation |
|
Punjab |
||
|
Pothwar
|
Feb-March |
March-April |
|
Central
Punjab |
Feb |
March |
|
Southern
Punjab |
January
15-February |
|
|
Sindh |
||
|
Entire
Sindh |
December-January |
March-April |
|
Umarkot,
Mirpurkhas, Sanghar, Badin, Khairpur, Ghotki, Kotri, Shikarpur, Haiderabad and Karachi |
Feb-March |
March-April |
|
Tando
Muhammad Khan, Matli and Badin |
July-August |
August-September |
|
KP |
||
|
Merged
Districts |
March-April |
April-May |
|
Malakand
Division/Region |
March-April |
April-May |
|
June-July |
July-August |
|
|
December-January |
January-February |
|
|
Hazara
Division/Region |
March-April |
April-May |
|
Peshawar
Region |
February-March |
March-April |
|
Southern
Region (Kohat, Bannu, Dera Ismail Khan) |
February-March |
March-April |
|
Balochistan |
||
|
Upper
Region |
December
(under plastic |
Februay-March |
|
Quetta
region |
January
(under plastic) |
March-April |
|
Lower
Region |
August |
September |
Note: The approximate
time of chili nursery raising and transplantation are given as baseline. The
farmers may adjust the times of nursery raising and transplantation according
to their local climatic conditions.
Fertile and well
drained land is required for nursery production as well as crop growing;
otherwise serious technical and nutritional problems may arise during the
cropping period.
Chili crop can be grown on almost all types of soils with a pH range of 5.5 to 7.5. However, the idle soil is sandy loam, which is preferred for early crop. Higher yields can be obtained from well-drained loamy, clay-loam, silt loam soils containing adequate organic matter. Poorly drained heavy soils are not suitable for chili cultivation. Ploughing must be avoided when the soil is too wet, otherwise large clods will be formed in heavier soil. Plough the soil when it is in proper moisture conditions. The land should be ploughed 3-4 times. Ploughing should follow the planking. At the time of planting, the soil should be firm. Chili nursery is transplanted on ridges and the seedlings are planted in the middle of ridge. Chili nursery transplantation is advisable in standing water in the afternoon. For Chilies production, row to row and plant to plant distances are kept as 70 and 30 cm respectively. Fertilizer NPK is applied @ of 150:120:60 Kg/ha. Nitrogen is applied in two split doses. Half of nitrogen is mixed with full dose of Phosphorous and Potash and applied before transplantation while the rest of nitrogen is applied with earthing up, which is done after 2-3 weeks of transplantation. At this stage weeding and hoeing is done. The soil is left for a day or two openly under the sun to dry-up. The remaining nitrogen is applied to the field and earthing-up is done. Irrigation is done after 2-3 days of earthing up.
Irrigation
of chili crop is essential for achieving normal plant growth and good health. For
irrigation availability of water is important at it is not possible to grow
them without irrigation. The chili crop may need irrigation as often as every
6-7 days in plains and in hills every 7-10 days.
Weeds
compete with chili plants in nutrition and water uptake. In a weed-free field,
harvesting is much easier. Early 2-3 hoeing can give effective control of
weeds, which is an important factor in reducing chili yields. All weeds must be
eradicated before they become well established. Early hoeing should be fairly
deep and close to the plant but the latter ones should be shallow and away from
plants to avoid injury to plants roots. Weeds also play the role as harbor for
insects and diseases, thus necessitating its eradication.
The
major insects those attack chili crop are aphids, white fly, tomato fruit worm,
cut worms and root knot nematodes. The crop should be checked after every 7-8
days carefully, if the signs of insect infestation are found such as damaged
leaves and injured fruits. The crop should be sprayed at regular intervals of 7-10
days. The attack of white flies and aphids can be controlled by spraying
Confidor or, Immidachloprid @ 1.5-2 ml/litre of water. Cut worm and fruit worm can be controlled with
the application of Match 1.5 ml, Tracer and Steward 2-2.5 ml and Emamectin
Benzuate 2.5-3 ml/litre of water.
Bacterial
Spot, Damping-Off, Powdery Mildew, Early Blight, Late Blight, Fusarium Wilt and
Viruses (Leaf Curl, Lear Roll, TMV) are major diseases of chili crop, which
reduce yields considerably. It is necessary to adhere to a strict spray
programme to keep the diseases under control in order to get higher production.
Applications must be repeated at 7-10 days intervals. For the control of Early
and Late Blights, the crop should be sprayed with any of the available
fungicides like ‘Dithane-M45/Ridomil Gold/Curzate/Acrobate M-Z/Entracol at the
rate of 2.5-3 gm/litre of water. Fusarium Wilt is a soil born fungal disease.
There is no effective chemical control method for this disease. Therefore, long
crop rotation (4-5 years) with cereals, is recommended. For virus control,
virus vector like aphids and white fly is necessary to control at early stage. If
diseases are controlled in chili crop, a good harvest is expected to obtain.
Harvesting of chili
crop is done in successions, which varies from region to region. Harvesting in
Punjab starts from May and ends in July while in KP it starts from June and
goes up to mid-September in most parts of KP. Harvesting in Balochistan is also
done in August and September. In Sindh, the first round of harvesting starts in
June and Chili arrives in Kunri market from 1 August to 15th September while its second arrival starts from
September 16 to 30th November with larger quantities. Harvesting is
done manually by hands, which is a labourer intensive process and contributes
significantly to the cost of production. Harvesting period always spread over
two to three months. The red chilies are dried under the sun light, which are
spread over geotextile sheets while some farmers dry the produce on ground,
which affects the quality of chili by adding to aflatoxin, that is mainly
caused by drying chilies on ground, thus reducing the chance to get high
premium in market during sale.
Marketing of chili almost takes place through commission agents, traders and other middlemen interacting with farmers in villages. Small producers of chili sell their fresh produce to local traders in village and they also buy standing crop. The traders collect and send the produce in wholesale fruits and vegetable market and sell it through commission agents. The crop is grown on contract basis also.
The dried red chili produce is sold in local markets through commission
agents. Kunri tehsil, district of Umar Kot, Sindh is the largest market for
dried chili in Asia and subsequently, main market for dried chili in Pakistan. The commission agents provide loans to growers
who are bound to sell their produce through them and they often charge higher
commission. Since commission agents’ profit depends on the volume of
transaction. They also get increased margins by mixing different grades of
chilies and keeping the moisture content high. This has serious implications
for the level of aflatoxin and overall quality of chili that reaches the
consumers. At the time of chili harvesting and sun drying period (Sep to Dec)
environmental temperature ranging from 30-40 C does not favour prompt drying of
the produce. It takes 8-10 days to completely dry/dehydrate the chilies. During
this prolonged drying time, fungus starts developing inside the chili producing
aflatoxins which are linked to serious health issues including cancer. During
open sun drying, the chilies are exposed to dust/dirt and various other
contaminants which deteriorate the quality of the valuable exportable
horticulture produce.
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