A field manual for soil health assessment by farmers

This manual presents a set of indicators and their measurements, adapted for easy application in the field for assessing soil health. It is useful as a reference manual for farmers to assess the soil health status of their fields themselves. This manual also gives some basic information on the indicators useful for field extension workers to understand the functions of the different soil health indicators and help in adapting the management practices to effectively overcome any constraint

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Assessment of impact of climate change on potato and potential adaptation gains in the Indo-Gangetic Plains of India

India is the second largest producer of potato in the world. The Indo-Gangetic plains (IGP) is the main potato growing region accounting for almost 85% of the 1.8 Mha under the crop in India where it is grown as an irrigated crop during the winter season. Since IGP is in sub-tropical plains, duration of the thermally suitable window is the main determinant limiting yields. Hence the impact of climate change on potato in the IGP was assessed using MIROC HI.3.2 A1b and B1, PRECIS A1b, A2, B2 scenarios and estimated the potential adaptation gains. The potato crop duration in the IGP is projected to decrease due to climate change. The evapotranspiration (ET) is projected to increase while the water use efficiency (WUE) for potato yield is projected to decline in future climates as a consequence of low threshold temperatures for decline in WUE and yield than the ET. Results indicate that the upper threshold for ET decrease is ~23 oC while that for WUE is 15 oC. The optimal temperatures for tuber yield is ~17 oC and thus the reduction in WUE in future climates is discernable. Climate change is projected to reduce potato yields by ~2.5, ~6 and ~11% in the IGP region in 2020 (2010-2039), 2050 (2040-2069) and 2080 (2070-2099) time periods. Change in planting time is the single most important adaptation option which may lead to yield gains by ~6% in 2020 and its combination with improved variety or additional nitrogen may be required to adapt to climate change leading to positive gains by ~8% in 2020 and by ~5% even in 2050. However, in 2080 adoption of all the three adaptation strategies may be needed for positive gains. Intra-regional differences in the impact of climate change and adaptation gains are projected; positive impact in northwestern IGP, gains in Central IGP with adaptation and yield loss in eastern IGP even with adaptation

AICRP on Potato Annual Report 2014-15

Not AvailableAll India Coordinated Research Project on Potato initiated in 1970-71 is operating through 17 State Agricultural Universities based centers, 7 CPRI based centers and 1 voluntary center. In this 43rd Annual Report of AICRP (Potato), experiments conducted during summer/kharif 2014 in hills/plateau and rabi 2014-15 in the plains have been reported. There were 14 experiments in Crop Improvement, 12 in Crop Production and 16 in Crop Protection at various locations. Efforts have been made to collect, consolidate, analyze and compile data collected in these experiments in this report. The significant achievements during the year in Crop Improvement are the pooled analysis of the performance of advanced hybrids which showed that two of them are promising. The environment of the potato growing season across the country has been categorized and thematic maps developed & this would help better targeting of genotypes to their target domains. Studies have been initiated to determine the base temperature of already released as well as advanced hybrids so that their thermal unit requirement can be worked out. Under Crop Production detailed studies on the applied–yield, uptake–yield as well as applied–update relations have been carried out which would enable in developing precision recommendations. Experiments on omission plot technique have been carried out and these would help to develop target yield equations. Since P nutrition is a serious problem in the hills, P use efficient cultivars viz K Swarna and K Neelima have been identified. Studied on water and nutrient economy through irrigation scheduling and its combination with mulching has been studied. The crop weed competition in terms of yield & nutrients at different locations has been studied in depth. Detailed micro nutrients analysis has been carried out in collaboration with IIHR which would enable in deciding the best micronutrient combination for potato. Under Plant Protection the salient achievements include validation of the Indoblightcast DSS, developing fungicide scheduling recommendations for Pantnagar & Shillong and a schedule for controlling early blight and recommendation for an alternative to imidacloprid for the control of sucking pests. Material for this report received from 7 CPRI based, 17 SAU based ans 1 voluntary center of AICRP(Potato). The Heads of Divisions of CPRI and their colleagues assisted in compilation and interpretation of the results. Their assistance is gratefully acknowledged.Not Availabl

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Not AvailableAll India Coordinated Research Project on Potato initiated in 1970-71 is operating through 17 State Agricultural Universities based centers, 7 CPRI based centers and 1 voluntary center. In this 44th Annual Report of AICRP (Potato), experiments conducted during summer/kharif 2015 in hills/plateau and rabi 2015-16 in the plains have been reported. There were 17 experiments in Crop Improvement, 10 in Crop Production and 14 in Crop Protection at various locations. Efforts have been made to collect, consolidate, analyze and compile the data collected in these experiments in this report. The significant achievements during the year in Crop Improvement are the climatic zonation of potato growing regions, the quantification of different agronomic traits to yield improvement and stability analyses of varieties & advanced hybrids in different environments. Promising hybrids for release as varieties have also been identified. Under Crop Production, detailed studies on the applied-yield, uptake-yield as well as applied- update relations were continued which led to the development of the software PENMAS. Experiments on omission plot technique were also continued and nutrient requirements for targeted yield at different locations were worked out. Detailed micro nutrients analysis has been carried out in collaboration with ICAR-IIHR and the results indicated that the micronutrient formulation “Potato Special” has promise. Under Plant Protection the salient achievements include validation of the Indoblightcast DSS, developing fungicide schedules for late blight management for Hassan and schedules for controlling early blight as well as for mites at Pune. Material for this report was received from 7 CPRI based and 1 their colleagues assisted in compilation and interpretation of the results.Not Availabl

Standard Operating Procedures for AICRP Trials

Not AvailablePotato is a unique crop very responsive to environment, but its phenological stages are not clearly visible especially in the subtropics. The system of AICRP started in the early 70s when the need for a system to test varieties at different locations and develop Best Management Practices before their release was felt. High yielding varieties and agro techniques developed at CPRI are tested and adapted through a network of AICRP centres. The mandate of AICRPs is not only the testing of varieties and agro techniques but also identification of location specific problems and their solutions. When experiments are conducted at many locations and many personnel are involved, it is necessary that common methodology is followed so that the results can be compared across locations. Proper care has also to be taken in recording observations so that we can understand the crop phenology vis a vis the environment. Thus, there is a need to delineate a uniform set of essential observations that have to be recorded in all the experiments which would help express the phenology of the crop as affected by the environment or treatments. Moreover, such a systematic list of observations would help to adopt a systematic analysis protocol. Further, the personnel conducting the trials at different centres are of widely different background, hence, well described protocols for conduct of the trials as well as recording observations would reduce the human errors in recording of observations. Hence, it is felt that this bulletin on standard operating procedures will give clearcut guidelines for the personnel involved for conduct of field experiments and recording the observations.Not Availabl