Aggressivity index intercropping
Similarly as suggested by them, aggressivity indices an index of crop dominance in intercropping and economic indices such as relative net ratios which are more appropriate for comparison in intercropping systems were computed by having the actual yield values. Rates of crop produce to work out the economic indices were obtained Intercropping systems established with transplants of both species on the same day had higher values of indices of competition and bio-agroeconomic efficiency than systems with longer periods of transplants between main and secondary crops. The intercropping Keywords: plant density, system productivity index, aggressivity index, forage dry matter yield, rice, cowpea 1. Introduction Intercropping forage legumes with cereals offers a potential for increasing forage and consequently livestock production in sub-Saharan Africa. In many countries in sub-Sahara Africa, crop residues from other crops such competitive and aggressive than maize. It was concluded that maize and mungbean additive intercropping systems, especially additive two and three do have more efficient land resources use, considerable yield advantage, moderate competitive ratio and aggressivity index values relative to their monocrops, and should be adapted. planting was performed on basis of several intercropping indices (MYE, LER, ATER, RCC, A and CR), the monetary advantage index (MAI), Actual Yield Loss index (AYL) and intercropping index (IA). After data analysis, competi-tivity indices indicated the higher yields advantages of maize varieties in in- terms of land equivalent ratio, relative crowding coefficient and aggressivity index etc. In general intercropping is being looked as an efficient and most economical production system in India as it not only increases the production per unit area and time but also improves the resource-use efficiency and economic standard of the growers. The Intercropping mixed cropping_principles_and_assessment_of_yield. Intercropping mixed cropping_principles_and_assessment_of_yield The two main indices of dominance are the aggressivity and competition index. Aggressivity is proposed by Mc Gihrist (1965). It gives a simple measure of how much the relative yield increase in species A is
Aggressivity is another index that is often used to indicate how much the relative yield increase in ‘a’ crop is greater than that of ‘b’ crop in an intercropping system (McGilchrist, 1965).
12 Jul 1999 2.5.1 Choosing species and varieties for intercropping systems. 2.5.2 Plant The use of an aggressivity index is also limited to mixtures from a The grain yields of both intercropped wheat and maize were enhanced by The time course of leaf area index in intercropping had the similar trends to those in 8 Aug 2012 Aggressivity index = Expenditure share / Market share Overlaying aggressivity targets onto the portfolio matrix gives us a good guide to 1 Jul 2013 Key words: Bambara groundnuts, maize, intercropping, planting density. Where, AGGab is aggressivity index, Xaa and Xbb are yields as.
LER is an index of intercropping advantage that indicated the amountofinterspecificcompetitionorfacilitationinaninter-cropping system (Fetene 2003): LER = Y is Y ss + Y iv Y sv, whereY is andY ss aretheyieldsofintercropandsolecropping of safflower, and Y iv and Y sv are the yields of intercrop and sole cropping of bitter vetch. A LER of 1.0 indicates that
Adopting Additive Intercropping for the Production of Maize and Mungbean competitive ratio and aggressivity index values relative to their monocrops, and 12 Nov 2017 Aggressivity (A). Aggressivity is another index that is often used to indicate how much the relative yield increase in 'a' crop is greater than that of 19 Apr 2012 where AIA and AIB are the aggressivity indices for the species A and B, PAB and PAA the dry weight per plant for the species A in the intercrop compatibility of grass /legume intercropping for better biomass yield and quality in North Gondar zone. mixture was described by calculating aggressivity index. index than other intercropping systems under study. (Table 4). Aggressivity (A) value was the minimum for barley + garlic which indicates the most competitive 24 Aug 2016 The aim of the study was to determine optimum time of intercropping aggressivity (A), competitive ratio (CR) and system productivity index
Identification of Advantages of Maize-Legume Intercropping over Solitary Cropping through Competition Indices in the East Mediterranean Region aggressivity (A), aggressivity ratio (CR), actual yield loss (AYL), monetary advantage index
Intercropping over Sole Cropping through Competition Indices four intercropping mixtures of maize (M) with cowpea (C) The aggressivity was calculated as: relevance of the selected indices for understanding intercrop functioning. It was found Aggressivity for yield (AGY) or nitrogen accumulated in shoots (AGN). Adopting Additive Intercropping for the Production of Maize and Mungbean competitive ratio and aggressivity index values relative to their monocrops, and 12 Nov 2017 Aggressivity (A). Aggressivity is another index that is often used to indicate how much the relative yield increase in 'a' crop is greater than that of 19 Apr 2012 where AIA and AIB are the aggressivity indices for the species A and B, PAB and PAA the dry weight per plant for the species A in the intercrop compatibility of grass /legume intercropping for better biomass yield and quality in North Gondar zone. mixture was described by calculating aggressivity index. index than other intercropping systems under study. (Table 4). Aggressivity (A) value was the minimum for barley + garlic which indicates the most competitive
Furthermore, several indices were used to evaluate the intercropping systems In most intercrops, the values of partial K, AYL, aggressivity, and competitive
Similarly as suggested by them, aggressivity indices an index of crop dominance in intercropping and economic indices such as relative net ratios which are more appropriate for comparison in intercropping systems were computed by having the actual yield values. Rates of crop produce to work out the economic indices were obtained
3 May 2015 Intercropping mixed cropping_principles_and_assessment_of_yield. main indices of dominance are the aggressivity and competition index.