Results 261 to 270 of about 1,300,524 (302)

Sub-ångström bond length tuning enhances photoluminescence quantum yield in copper nanoclusters. [PDF]

Nat Commun
Tang L, Zhang W, Han Q, Wang B, Zhou M, Wang S.   +5 more
europepmc   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Rethinking yield gaps

2015
This is a prepublication version of J.M. Beddow, T.M. Hurley, P.G. Pardey, and J.M. Alston’s “Food Security: Yield Gap” chapter in N. Van Alfen, editor-in-chief, Encyclopedia of Agriculture and Food Systems, Vol. 3, San Diego: Elsevier, 2014, pp. 352-365.
Beddow, Jason M., Hurley, Terrance M., Pardey, Philip G., Alston, Julian M., Beddow, Jason M., Hurley, Terrance M., Pardey, Philip G., Alston, Julian M.   +7 more
openaire   +3 more sources

Rice yields and yield gaps in Southeast Asia: Past trends and future outlook

European Journal of Agronomy, 2012
Rice production must increase to meet future food requirements amid strong competition for limited resources. Yield gap analysis is a useful method to examine how large the ranges are between potential, desirable rice yields and those actually realized in farmers’ fields.
Laborte, A.G., de Bie, C.A.J.M., Smaling, E.M.A., Moya, P.F., Boling, A.A., van Ittersum, M.K.   +5 more
openaire   +1 more source

Mind the (yield) gap(s)

Food Security, 2012
This paper explores the origin of the notion of “yield gap” and its use as a framing device for agricultural policy in sub-Saharan Africa. The argument is that while the yield gap of policy discourse provides a simple and powerful framing device, it is most often used without the discipline or caveats associated with the best examples of its use in ...
openaire   +1 more source

Spatiotemporal trends in crop yields, yield variability, and yield gaps across the USA

Crop Science, 2020
AbstractFuture crop yield increases are unlikely to keep pace with the dietary needs of a global human population expected to reach nine billion by 2050. This study used United States Department of Agriculture county‐level yield data and autoregressive moving‐average models to examine how changes in maize (Zea mays L.), soybean (Glycine max L.), and ...
Christopher J. Kucharik, Tanjona Ramiadantsoa, Jien Zhang, Anthony R. Ives   +3 more
openaire   +1 more source

Identifying maize yield and precipitation gaps

2021
In sub-Saharan Africa (SSA), precipitation is an important driver of agricultural production. In Uganda, maize production is essentially rain-fed. However, due to changes in climate, projected maize yield targets have not often been met as actual observed maize yields are often below simulated/projected yields. This outcome has often been attributed to
openaire   +1 more source

Yield Gap-Based Poverty Gaps in Rural Sub-Saharan Africa

World Development, 2015
Summary Given Africa’s challenge of feeding a growing population, narrowing yield gaps is an efficient way of raising production under covariate constraints. Using household panel data from 21 regions in eight sub-Saharan African countries, this article unravels the determinants of yield gaps.
Fred M. Dzanku, Magnus Jirström, Håkan Marstorp   +2 more
openaire   +1 more source

Yield and Yield Gaps in Central U.S. Corn Production Systems

Agronomy Journal, 2014
The magnitude of yield gaps (YGs) (potential yield – farmer yield) provides some indication of the prospects for increasing crop yield. Quantile regression analysis was applied to county corn (Zea mays L.) yields (1972–2011) from Kentucky, Iowa, and Nebraska (irrigated) (total of 115 counties) to estimate the attainable potential yield (APY) (yield in ...
D. B. Egli, J. L. Hatfield
openaire   +1 more source