Hybrid pennisetum in a warm temperate climate: productivity span and effects of nitrogen fertilizer and irrigation on summer production and survival

Muldoon, D.K. and Pearson, C.J. (1977) Hybrid pennisetum in a warm temperate climate: productivity span and effects of nitrogen fertilizer and irrigation on summer production and survival. Australian Journal of Experimental Agriculture and Animal Husbandry, 17 (89). pp. 982-990.

[img] PDF - Published Version
Restricted to ICRISAT researchers only

Abstract

Changes in DM yield and its components and plant survival were examined in Pennisetum americanum X P. purpureum under different rates of N fertilization on irrigated and dryland areas throughout 2 growing seasons. The productivity of 1st-, 2nd- and 3rd-yr stands was studied. Production was markedly seasonal; almost 50% of the max. yield of 11.4 t/ha yr came from 6-wk regrowth in mid-summer. When environmental conditions were favourable, dry wt. and leaf area responses were linear, but under moisture stress or low temp. and radiation, plants responded only to intermediate levels of N because of suppressed leaf and tiller production. Protein content increased with N. Protein and digestibility were adequate for animal production except in mid-summer, when rapid plant development under irrigation and high N resulted in digestibility values <60%. Survival was high except when plants were cut in April or high rates of N fertilizer were applied. Production increased in the 2nd yr because of tiller multiplication; individual tiller wt. decreased. Productivity was maintained into the 3rd yr

Item Type: Article
Author Affiliation: Dep. of Agron. and Hort. Sci., Sydney Univ., Sydney, N.S.W., Australia 2006
Subjects: Atmosperic Science > Climatology
Plant Production
Plant Protection
Divisions: General
Depositing User: Mr B Krishnamurthy
Date Deposited: 29 Jun 2012 14:12
Last Modified: 29 Jun 2012 14:12
Official URL: http://dx.doi.org/10.1071/EA9770982
URI: http://eprints.icrisat.ac.in/id/eprint/6336

Actions (login required)

View Item View Item
EPrints Logo
eprints is powered by EPrints 3 which is developed by the School of Electronics and Computer Science at the University of Southampton. More information and software credits.