Thumbnail Image

Anand Agricultural University, Anand

Anand Agricultural University (AAU) was established in 2004 at Anand with the support of the Government of Gujarat, Act No.(Guj 5 of 2004) dated April 29, 2004. Caved out of the erstwhile Gujarat Agricultural University (GAU), the dream institution of Sardar Vallabhbhai Patel and Dr. K. M. Munshi, the AAU was set up to provide support to the farming community in three facets namely education, research and extension activities in Agriculture, Horticulture Engineering, product Processing and Home Science. At present there seven Colleges, seventeen Research Centers and six Extension Education Institute working in nine districts of Gujarat namely Ahmedabad, Anand, Dahod, Kheda, Panchmahal, Vadodara, Mahisagar, Botad and Chhotaudepur AAU's activities have expanded to span newer commodity sectors such as soil health card, bio-diesel, medicinal plants apart from the mandatory ones like rice, maize, tobacco, vegetable crops, fruit crops, forage crops, animal breeding, nutrition and dairy products etc. the core of AAU's operating philosophy however, continues to create the partnership between the rural people and committed academic as the basic for sustainable rural development. In pursuing its various programmes AAU's overall mission is to promote sustainable growth and economic independence in rural society. AAU aims to do this through education, research and extension education. Thus, AAU works towards the empowerment of the farmers.

Browse

19962
Reset filters
Subject: Agricultural Meteorology × End date: 1996 × Start date: 1996 × Type: Thesis × Thesis Type: M.Sc ×
Reset filters

Search Results

Now showing 1 - 2 of 2
  • Thumbnail Image
    ThesisItemOpen Access
    CROP WEATHER RELATIONSHIPS AND POPULATION DYNAMICS OF Helicoverpa armigera IN TWO PIGEON PEA (Cajanus cajan L.) CULTIVARS IN MIDDLE GUJARAT AGROCLIMATIC REGION
    (AAU, Anand, 1996) RAVIPATI, MAHENDRA KUMAR; Savani, M. B.
    Pigeonpea [Cajanus cajan L.) is one of the major grain legume crop in tropical and sub - tropical regions of India and grown mainly as rainfed crop. The crop is characterised as drought resistant and the productivity is different in different environments. Since the effects of weather on yield are complex, the deep and clear understanding of the effect of weather parameters on the growth and development of pigeonpea is necessary. An experiment was conducted during the Kharif season of the, year 1994 at Anand to study the crop-weather relationship and crop-weather-pest dynamics in two cvs.BDN-2 and GT-100 of pigeonpea. The field experiment was laid out in split plot design with four replications. The treatments comprised of two irrigation levels, two plant protection levels, two varieties, and three dates of sowing. The results obtained during the course of investigation revealed that weather played significant role in growth, development and yield of pigeonpea. The variations in days taken to complete the different phenophases among the different dates of sowing were attributed due to the variations in temperature and photoperiod. The number of days required for the completion of any phenophase was declined with increase in the temperature and photoperiod. The yield and yield attributes were significantly influenced by irrigation and dates of sowing. The grain yield, biomass, and number of pods per plant were observed more in D1 than in D2, and D3. Grain yield, biomass, and number of pods per plant declined with the application of irrigation. The irrigated crop puts up more biomass initially but it was declined considerably than in unirrigated crop in the later phases due to heavy attack of the larvae of Helicoverpa. The different agrometeorological indices like GDD, PTU and HTU has positive and significant correlation with days taken for the completion of the different phenopases, eccept for the phenophase P4. The thermal time (GDD) has highly significant correlations with days taken for different phenophases. Functional relations were developed to predict the number of days required for different phenophases in both the cultivars BDN-2 and GT-100. The leaf area index (LAI) and crop growth rate (CGR) were found to be influenced by irrigation and sowing time. The crop sown in D1 maintained more LAI and CGR in both the cultivars, compared to D2 and D3, The decline in the values of LAI and CGR during flowering phase in both the cultivars was due to heavy infestation of Helicoverpa. The radiation use efficiency (RUE), on seasonal basis was found to be high in rainfed crop compared to irrigated crop. The RUE was high in D1 sown crop, and was declined in the delayed sowings. The RUE was found high in cv.GT-100 compared to cv.BDN-2. Functional relations were developed to estimate the near surface soil moisture content under developing conopics of pigeonpea using remotely sensed canopy and air temperatures, and the LAI. A linear relationship was observed between evapotranspiration and canopy-air temperature differential. The relation was found closely related, when the variations due to energy load was accounted. The populations of the eggs and larvae of the Helicoverpa were found to be highest in first date of sowing (D1) both at 50% flowering and 50% podding phases compared to D2 and D3. The cultivar GT-100 was found more succeptible to Helicoverpa due to the early flowering character than cv.BDN- 2. The larval population of Helicoverpa in pigeonpea was found significantly correlated with air temperature, vapour pressure and pan evaporation.
  • Thumbnail Image
    ThesisItemOpen Access
    GROWTH, DEVELOPMENT AND YIELD ATTRIBUTES OF CHICKPEA (Cicer arietinum Linn.) IN RELATION TO WEATHER PARAMETERS
    (AAU, Anand, 1996) Rao, Gattineni Srinivasa; SAVANI, M. B.
    Chickpea or Bengal gram (Cicer arietinum Linn.) is one of the most important pulse crops in India. The crop is grown in the semi-arid tropical areas of India as a winter crop on stored soil moisture from the preceding rainy season. The crop is characterized as drought tolerant and the productivity is different in different environments. Many of the crop management practices developed have focused the water management aspects, neglecting the importance of energy interception and its efficiency. An experiment was conducted at Agronomy Farm of the B.A. College of Agriculture, Gujarat Agricultural University, Anand Campus, Anand during rabi season of 1994-95, on chickpea cv. ICCC-4 on the loamy sand soil with three dates of sowing and two pest control measures with Latin Square Design. The results obtained in this investigation revealed that the air temperature had profound influence on the growth and development of the chickpea crop. The differences in the total biomass per plant, number of pods per plant and seed yield per hectare among all the treatments were significant. The number of days taken for completion of the emergence phase was negatively and significantly correlated with mean values of pan evaporation and air temperature.. Significant positive correlations were observed for the minimum air temperature, morning and afternoon vapour pressures, and morning and afternoon relative humidities, with days taken for the completion of vegetative phase. The duration of pod setting phase was found to be significantly and positively correlated with sunshine duration (BSS), pan evaporation, wind speed but negatively correlated with both the morning and afternoon relative humidities. BSS had negative association with number of days taken for completion of the pod filling phase. During the maturing phase, most of the weather parameters were found to have significant association with the number of days taken for its completion.