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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.

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19891
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Subject: Agricultural Meteorology × Author: PATEL, H. R. × End date: 1989 × Start date: 1982 ×
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    ThesisItemOpen Access
    SOLAR RADIATION, PAR AND PHOTOSYNTHETIC EFFICIENCY IN RELATION TO GORWTH AND YIELD OF PIGEONPEA (Cajanus cajan [L.] Millsp.) BASED DIFFERENT INTERCROPS WITH DIFFERENT LEVELS OF FERTILIZER
    (AAU, Anand, 1989) PATEL, H. R.; Mehta, A. N.
    A field experiment with twenty eight different treatments was conducted in collaboration with Agronomy Department at Anand during the kharif season of the year 1987-88 with the broad-based objectives of evaluating the role of intercepted PAR in the most suitable companion intercrop, assessment of economics of fertilizer use under different intercropping systems and to determine growth, light use efficiency, attenuation of PAR and yield stability of different intercrops in pigeonpea based intercropping system in Middle Gujarat conditions. The statistical analysis on the data of grain yield of pigeonpea and pigeonpea equivalent revealed that different cropping systems had significant effect on grain yield. Intercropping with soybean, groundnut, cowpea, blackgram and greengram did affect pigeonpea yield in comparison to solid stand of pigeonpea, while pearlmillet competed with pigeonpea owing to being a C-4 type and reduced the pigeonpea grain yield. Pigeonpea equivalent grain yield analysis also revealed that pearlmillet, groundnut, cowpea, greengram, soybean and blackgram intercrops appears to be most remunerative with pigeonpea. For yield stability of both the component crops in terms of grain yield, the order of intercrops viz., pigeonpea + groundnut, pigeonpea + cowpea, pigeonpea + greengram and pigeonpea + blackgram is preferred, while for in terms of gross return (Rs/ha ), the same 6rder is found suitable for intercropping. In a solid stand of pigeonpea, due to absence of companion crop, LAI peak occurred earlier (85 DAS). But for intercropped pigeonpea, LAI peak attained in latter part of reproductive stage and seems to have resulted higher rate of assimilates and partitioned for higher pigeonpea grain yield except for pigeonpea + pearlmillet cropping system. Different cropping systems, growing periods and their interaction had a significant effect on absorption coefficient of PAR light interception for pigeonpea. Per cent interception dropped after 155 DAS for pigeonpea sole, while except pigeonpea + pearlmillet rest of the cropping systems achieved higher per cent PAR interception during reproductive stage and benefited for partitioning higher grain formation for intercropped pigeonpea. The periodic photosynthetic conversion efficiency (DM produced per unit of intercepted PAR (kg ha-1 /MJM-2 ) for intercropped pigeonpea observed more or less suppressed in early stage and after harvest of intercrop, the conversion efficiency of intercropped pigeonpea was highly accelerated with canopy development which seems to have contributed for partitioning higher grain formation compared to sole stand of pigeonpea, except pigeonpea + pearlmillet system. The conversion efficiency of sole pigeonpea, during reproductive stage remained more or less constant, resulted in highest straw and lower grain formation. Looking to the overall conversion efficiency of both the component crops, except pigeonpea + pearlmillet and pigeonpea + soybean, rest of the cropping systems found superior.