http://www.bssnews.net/newsDetails.php?cat=0&id=77835&date=2009-12-21
Intercropping with sugarcane gains popularity in N-region
By Dr Aynal Haque
RAJSHAHI, Dec 21 (BSS) – Intercropping of various cash crops with sugarcane has been gaining popularity everywhere in the country’s northwestern region during the winter season for the last couple of years.
Sugarcane intercropping is being adjudged as helpful for boosting total crop production per unit area and time along with ensuring sustainable sugarcane cultivation with higher economic benefit compared to other crops in the country’s northwestern region.
Principal Scientific Officer of Bangladesh Sugarcane Research Institute (BSRI) Dr Samajit Kumar Pal told BSS that intercropping can not only increase total crop production but also help improve soil health and fertility with little or no negative effect on sugarcane yield and quality.
He said the country’s northwestern region is all along famous for sugarcane farming and production. So, he said, 10 out of total 16 sugar mills in the country were established in the region.
Systematic intercropping of potato, onion, garlic and some other winter crops, vegetables and spice even helps increase sugarcane yield compared to single-cropping.
“We have developed more than thirty production packages of different winter crops suitable as intercrop with sugarcane but the technologies could not be expanded to the farmers’ field due to lack of proper initiative,” Dr Khalil lamented.
Sugarcane is a cash-cum-industrial crop of Bangladesh. But the national average yield is far below than potential yield.
Although a good number of high yielding modern varieties and production technologies have been developed at the BSRI but these modern varieties and production technologies failed to increase national average yield to a satisfactory level.
Due to high demand of cereals and vegetable, sugarcane is being gradually pushed into low-lying marginal lands.
To solve the problems, BSRI developed a series of high yielding varieties of sugarcane and production technologies especially intercropping packages for sustainable production under particular agro-ecological and socio-economic conditions of resource poor farmers.
Multiple cropping, in general, refers to planting two or more crops in the same field in a year. It involves intensive crop cultivation in terms of effective use of space and time.
It plays an important role in promoting the development of agriculture in many countries of the world especially in densely populated developing countries with scare land reserves.
A chain of experiments and trials were conducted in different farming fields in the region for the last couple of years exploring good results in terms of economic benefit and soil health.
Intercropping or mixed cropping makes better use of sunlight and water in addition to showing some beneficial effects on pest and diseases.
In many cases, it gives higher total production, monetary returns and greater resource use efficiently and increases land productivity by almost 60 per cent.
It often gives higher cash return and increases total production per unit area and time than mono-cropping.
Intercropping also increases nutritional quality of diet for the farm family allowing better control of weeds and increasing land equivalent ratio as much as 78 percent and reduces soil erosion.
In an intercrop community, the individual plant of one crop exposed to both interplant and inter-specific competition although causing a reduction in individual yield, total productivity per unit area increases.
Strengthening intercropping programme following appropriate production packages might help obtain a considerable amount of pulses, vegetables, oil seeds, spices and other crops suitable as intercrop with sugarcane.
BSRI Principal Scientific Officer Dr Khalilur Rahman told BSS that the existing sugarcane cultivation would not be economically viable without intercropping. So, the method must be mandatory for the sugarcane farmers.
This will certainly reduce the demand for extra land to produce the above mentioned crops as well as save foreign currency.
Furthermore, intercropping will create additional job opportunity needed for intensive crop production.
Mixed cultivation of pulse with sugarcane was practiced at the farmers’ level demonstration fields to explore potentialities of intercropping pulses and leguminous crops with sugarcane and developed some packages for adoption at farmers’ field and the total adjusted yield from sugarcane and intercrops were found comparatively higher than that of sole sugarcane.
Similarly, a good number of trials have been conducted on intercropping vegetables like potato, cabbage, cauliflower, broccoli, carrot, tomato, spinach with sugarcane in the region were found very suitable intercrops with sugarcane especially in paired row system.
The field level findings indicated that intercropping vegetables were found very remunerative with sugarcane than sole cropping.
No adverse effect of intercropping vegetables on sugarcane yield was found even in some cases sugarcane yield was found higher than intercropped condition in single row but it was almost identical in paired row system. Yields of intercrops were higher in paired row.
It was counted that large scale intercropping different vegetables with sugarcane in paired row could be played a vital role in increasing national production of those crops without involving any additional land.
Onion, garlic, coriander and chilies and some uncommon spice crops like black cumin, methi, mouri are found very suitable and compatible with sugarcane as intercrop.
Some of research finding showed that a significant amount of different winter crops production was increased by using the methodical intercropping with sugarcane in a recent decade.
Intercropping potato, onion, garlic, lentil, chickpea, mustard, cabbage, cauliflower, mug-bean was done successfully.
Dr Khalil said a number of management and farmers’ resource related problems are persisting in implementation of intercropping with sugarcane in the country which needed to be solved as early as possible for wide-ranging and speedy dissemination of research-based outcomes to the farmers doorsteps.
Besides, the intercropping with sugarcane should become widely popular among the sugarcane farm families, which will ensure positive impact on food securities to farmers as well as the nation, he added.