Integrated pest management in rice production: resource use efficiency and relative economics

Abstract

The present study entitled Integrated Pest Management in rice production: resource use efficiency and relative economics, was conducted in Kuttanad region of Kerala, India with the specific objectives of evaluating the economics of IPM technology over the traditional practice and to assess the resource use efficiency. The study pertaining to the summer crop in the area (November 2004 to February 2005) was undertaken during March to July 2005

A sample of 70 farmers each from IPM and Non-IPM category were selected by conducting a preliminary survey to categorise the farmers under each group. The production details of paddy were gathered from both the groups using a pretested structured questionnaire by personal interview method.

The management under IPM programme starts from the very beginning of the crop calendar, starting with the varietal selection, its source, seed rate and method of planting. Though both types of farms were sowing only recommended varieties, seed rate was much above the recommended level in the case of non IPM group and they primarily relied on farm saved seeds. It was the reverse in the case of IPM farms. The level of application of fertilizers and soil ameliorants was lower in the case of IPM farms. Among the various inputs in crop production, labour was the most important single item of expenditure in paddy production. The total labour use in IPM farms was found to be 75 man-days per hectare i.e., 5.63 per cent higher than that of Non-IPM farms (71 man days per hectare). This is primarily due to the additional labour required in IPM farms for weeding (due to lesser amount of weedicide use), land preparation (additional ploughing), harvesting (higher yield) and IPM measures.

Thus the total expenditure on seeds and sowing, fertilizer application and plant protection charges were 67.15 per cent higher in the Non-IPM group. Contrary to this, the expenditure on land preparation, weeding and harvesting operations together, were 11.93 per cent higher in IPM group. Total cost of cultivation was estimated as 5.07 per cent higher in Non-IPM group (Rs31536/ha) compared to IPM group (Rs 29841/ha)

Apart from the cost saving, relatively higher yield (45.23 quintals per hectare) was also there in IPM farms compared to the other group.(44.46 quintals per hectare). The partial budgeting analysis have revealed that the cost saving coupled with higher yield realization in IPM farms has resulted in an additional net private gain in income to the tune of Rs 2824 per hectare

Benefit cost ratio at Cost A1 was estimated as 1.85 (Non-IPM) and it was 2.06 for IPM farms inferring rice cultivation under IPM, as more beneficial than chemical based cultivation. At cost C3 level, the non IPM groups were more prone to risk as the BC Ratio was very close to unity

Cobb-Douglas production function was fitted to assess the efficiency of resource use in paddy cultivation for both IPM and Non-IPM farms. It could be concluded that IPM farms were economically more efficient in resource utilization than the Non-IPM counter parts.

Though most of the farmers were aware of the potential hazards of excessive chemical use in agriculture, and got exposed to adequate training, the spread of the technology is constrained by factors like, the perception of a yield loss, difficulties in water management and labour problems. But those who have adopted the technology was found to be aware of the short-term nature of yield reduction and cost saving aspects of the technology.

The policy suggestions are made based on the findings and future line of work is also suggested.