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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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Subject: Agricultural Physics and Meteorology × End date: 1996 × Start date: 1996 × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    ON ANALYSIS OF LONG TERM EXPERIMENTS WITH CHANGE IN INPUT
    (AAU, Anand, 1996) LAKHERA, MOHAN LAL; PATEL, N. M.
    Among various types of agricultural experiments, long term experiments are continued on the same site with the same set of treatments and package of practice for many years to study the effect of treatments on soil productivity. For such experiments, statistical procedures are available for pooling the results. Due to advancement in agrotechnology, scientists are sometimes changing the package of practices (input factor) but not the basic treatments in the ongoing long term experiments. This situation affects/alters the basic concept of the long term experiment. Such an experiment is in progress on bidi tobacco crop since 1960-61 at the Bidi Tobacco Research Station, Gujarat Agricultural University, Anand, wherein variaties were changed as and when they were released by the station. The statistical method of data analysis of such experiment is not available in the literature (having direct application). Therefore, present study was undertaken with a view to (i) compare analysis of variance and rank analysis techniques for combined analysis of data, (ii) explore the feasibility of applying principal component analysis in combined analysis of data, (iii) apply regression technique in predicting long term effect of each treatment, and (iv) study suitability of transformation-sustainability index as a method of analysis of long term experiment involving changed input factor(s). Five methods viz.. Analysis of variance (ANOVA), Rank analysis, Principal component analysis. Regression analysis and transformation were employed for analysing the data. On the basis of results obtained through statistical analysis of the long term experiment on bidi tobacco, it can be generalized that the Rank analysis was the best method for analysing such complicated experiments. Other methods such as ANOVA, Regression analysis and Principal component analysis could not prove effective due to disturbance in basic assumptions like common errors, additivity of effects etc., due to varietal variation which was confounded with year effect. A new type of transformation termed as sustainable transformation is proposed for analysing the data of long term experiment with changed input factor (practices).