RESUMO
An experiment was carried out at Faculty of Agriculture Department of Agricultural Meteorology Farm, Centre for Advanced Agricultural Meteorology, College of Agriculture, Pune during Kharif seasons of 2014 and 2015.The experiment was laid out in split plot design with three replications.The treatment comprised of three brinjal hybrids viz.,V1:Phule Arjun, V2: Krishna, V3: Panchganaga as main plot and four planting windows viz., P1: 31st MW (30 July-5 August), P2: 32ndMW (6-12August), P3:33rdMW (13-19 August) and P4: 34thMW (20-26 August) as sub plot treatments.Cumulative GDD, HTU and PTU at the end of each growth stages showed that numerically higher requirement was observed in hy.Phule Arjun over hy.Krishana and hy.Panchganaga hybrids during both year 2014 and 2015 experimentation period. Whereas, the lowest canopy temperature was found in hy.Phule Arjun (29.0 0C) than rest of the brinjal hybrids. Canopy reflected PAR and transmitted PAR was higher in (191.54 and 188.62 µ mol m-2s-1) Panchganaga hybrids among the brinjal hybrids. Heat unit requirement or GDD has been used for characterizing the thermal response in brinjal crop. GDD for entire crop growing period decreased with subsequent delay in planting. HTU and PTU were also decreased during later planting windows condition. GDD in different stages in that emergence (59.6 and 72.3), vegetative growth (481 and 478), 50% flowering (575 and 568), first harvesting (681 and 645), last harvesting (1178 and 1183) was observed in hybrid Phule Arjun during 2014 and 2015, respectively. Lower GDD was observed in hy.Panchaganaga during 2014 and 2015, respectively. The highest HTU observed in 31st MW planting windows in hybrids Phule Arjun (5376 and 9190.4).This was followed by hy.krishna and Panchganaga (5370 and 9086) during 2014 and 2015, respectively. Highest HTU was observed in 31st MW in hybrids Phule Arjun followed by hy.krishna and lower in panchganga.
RESUMO
An experiment “Effect of weather parameters on growth, yield and insect pest infestation on brinjal varieties under different planting windows” was carried out at Faculty of Agriculture Department of Agricultural Meteorology Farm, Centre for Advanced Agricultural Meteorology, College of Agriculture, Pune during Kharif seasons of 2014 and 2015. The experiment was laid out in split plot design with three replications. The treatment comprised of three brinjal hybrids viz., V1:Phule Arjun, V2: Krishna, V3: Panchganaga as main plot and four planting windows viz., P1: 31st MW (30 July-5 August), P2: 32ndMW (6-12 August), P3:33rdMW (13-19 August) and P4: 34thMW (20-26 August) as sub plot treatments.The correlation of meteorological parameters with incidence of brinjal shoot and fruit borer was studied in 2014. The correlation of shoot and fruit borer on brinjal (0.764*and 0.796*) and (0.784* and 0.704*) with the weather parameters are presented. Whereas morning relative humidity, rainfall and bright sunshine hours showed positive correlation with shoot and fruit borer population Average number of aphids/ jassid/ whiteflies plant showed highly significant negative correlation with minimum temperature(r= -0.702*,-0.710* and 0-.800*,) respectively. During 31stMW planting windows maximum temperature showed significant negative correlation with shoot and fruit borer population(r= -0.796*).It was observed that the infestation of shoot and fruit borer started increasing from October to November and its decreased onwards meteorological week. Amongst all the brinjal hybrids, Phule Arjun hybrids found significantly superior under extended planting windows followed by Krishna and Panchganga. Planting during 31st MW (1st week of August) was observed to be most suitable and optimum for brinjal considering the growth and yield attributes. This planting window was at par with 32nd MW planting window. Linear correlation analysis for brinjal fruit yield with weather parameters was significantly positively correlated with maximum temperature and minimum temperature.Timely planting during 31st MW (P1) and 32nd (P2) recorded lower incidence of shoot and fruit borer, aphids, jassid and whiteflies. Whereas, crop planted during 34thMW (P4) recorded maximum incidence of all pests. Among the brinjal hybrids, higher incidence was recorded with Panchganaga and minimum was recorded on Phule Arjun.Among the brinjal hybrids lower incidence of shoot and fruit borer, aphids, jassids and whiteflies was recorded on hy. Phule Arjun, which was found to be tolerant. This was followed by hy. Krishna. The higher incidence of all pests was recorded hy. Panchganga, which was found to be susceptible. Pest population on brinjal shoot/fruit/Aphid/Jassid/Whiteflies had significant negative correlation with minimum temperatures, whereas, morning and evening relative humidity, wind speed, pan evaporation and bright sunshine hours showed positive correlation pests population.
RESUMO
An experiment was carried out at Faculty of Agriculture Department of Agricultural Meteorology Farm, Centre for Advanced Agricultural Meteorology, College of Agriculture, Pune during Kharif seasons of 2014 and 2015.The experiment was laid out in split plot design with three replications. The treatment comprised of three brinjal hybrids viz.,V1:Phule Arjun, V2: Krishna, V3: Panchganaga as main plot and four planting windows viz., P1: 31st MW (30 July-5 August), P2: 32ndMW (6-12August), P3:33rdMW (13-19 August) and P4: 34thMW (20-26 August) as sub plot treatments. In micrometeorological studies of the higher radiation absorptions and lower reflection was absorbed under hy. Phule Arjun as compared to hy. Krishana and hy Panchganga. The maximum Incident PAR (1270 u mol m-2s-1) Intercepted PAR (86.47u mol m-2s-1),Absorbed PAR (1094.4u mol m-2s-1) and Radiation use efficiency (2.43gmMJ m-2) was observed in hy .Phule Arjun. Cumulative GDD, HTU and PTU at the end of each growth stages showed that numerically higher requirement was observed in hy. Phule Arjun over hy. Krishana and hy. Panchganaga hybrids during both year 2014 and 2015 experimentation period. Whereas, the lowest canopy temperature was found in hy. Phule Arjun (29.0 0C) than rest of the brinjal hybrids. Canopy reflected PAR and transmitted PAR was higher in (191.54 and 188.62 µ mol m-2s-1) Panchganaga hybrids among the brinjal hybrids.
RESUMO
An experiment was carried out at the Faculty of Agriculture Department of Agricultural Meteorology Farm, Centre for Advanced Agricultural Meteorology,College of Agriculture, Pune during Kharif seasons of 2014 and 2015.The experiment was laid out a split plot design with three replications.The treatment comprised of three brinjal hybrids viz.,V1:Phule Arjun, V2: Krishna, V3: Panchganaga as main plot and four planting windows viz., P1: 31st MW (30 July-5 August), P2: 32ndMW (6-12August), P3:33rdMW (13-19 August) and P4: 34thMW (20-26 August) as subplot treatments. Micrometeorological studies of Cumulative GDD, HTU, and PTU at the end of each growth stage showed that the numerically higher requirement was observed in hy.Phule Arjun over hy.Krishna and hy.Panchganga hybrids during both the years 2014 and 2015 experimentation period.Whereas, the lowest canopy temperature was found in hy.Phule Arjun (29.0 0C) than the rest of the brinjal hybrids. Canopy reflected PAR and transmitted PAR was higher in (191.54 and 188.62 µ mol m-2s-1) Panchganaga hybrids among the brinjal hybrids. Amongst all the brinjal hybrids, Phule Arjun hybrids were found significantly superior under extended planting windows followed by Krishna and Panchganga. Planting during 31st MW (1st week of August) was observed to be most suitable and optimum for brinjal considering the growth and yield attributes. This planting window was at par with the 32nd MW planting window. Linear correlation analysis for brinjal fruit yield with weather parameters was significantly positively correlated with maximum temperature and minimum temperature.