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Achievements
- Daily weather data of 20
years had been computerised and brought out as a data base running into four volumes. Water availabillty periods
for bangalore region were determined using water balance for
the period 1975-96.
- Studies on rainfall
characterization showed an increase in average annual rainfall
after 1990. Quantum of June rains increased and July rains
decreased after 1990 compared to the period 1972-1990. The impact
of these changes on agriculture is under study.
- Fingermillet crop was raised
each year during 1992-1997. Phenology, biomass, leaf area index,
partitioning of dry matter, yield attributes, soil moisture were
all recorded. Water balance was computed and crop coefficients
were derived for different growth stages. Water requirement during
different growth stages was computed.
- Groundnut crop was raised
during the period 1992-1997 and similar observations like those in
fingermillet were recorded. The data generated provides database
for application of PNUTGRO model which is proposed to be used in
the coming seasons.
- A multiple linear regression
between grain yield of fingermillet with cumulative water used,
growing degree days and water requirement satisfaction index was
developed which explained about 67 per cent variability in yields.
Application of the model with independent data set for 1996 and
gave yield predictions to an accuracy of about 95 per
cent.
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