Search Results - "Van Asten, P."

Drought is a major yield loss factor for rainfed East African highland banana by van Asten, P.J.A., Fermont, A.M., Taulya, G.

“…▶ Highland bananas require more than 1300 mm annual rainfall for optimal production. ▶ Every 100 mm yr −1 decrease in rainfall reduces bunch yields by 9%. ▶…”
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Application of thermography for monitoring stomatal conductance of Coffea arabica under different shading systems by Craparo, A.C.W., Steppe, K., Van Asten, P.J.A., Läderach, P., Jassogne, L.T.P., Grab, S.W.

“…Stomatal regulation is a key process in the physiology of Coffea arabica (C. arabica). Intrinsically linked to photosynthesis and water relations, it provides…”
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Warm nights drive Coffea arabica ripening in Tanzania by Craparo, A. C. W., Van Asten, P. J. A., Läderach, P., Jassogne, L. T. P., Grab, S. W.

“…Studies have demonstrated that plant phenophases (e.g. budburst, flowering, ripening) are occurring increasingly earlier in the season across diverse ecologies…”
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Soil fertility gradients and production constraints for coffee and banana on volcanic mountain slopes in the East African Rift: A case study of Mt. Elgon by De Bauw, P., Van Asten, P., Jassogne, L., Merckx, R.

“…•Soil fertility parameters strongly correlate with elevation on the slopes of Mt. Elgon.•Nutrient uptake by coffee and banana strongly depends on elevation…”
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Increasing land pressure in East Africa: The changing role of cassava and consequences for sustainability of farming systems by Fermont, A.M., van Asten, P.J.A., Giller, K.E.

“…Increasing land pressure during the past three to four decades has transformed farming systems in the mid-altitude zone of East Africa. Traditional millet-,…”
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Opportunities and pitfalls for researchers to contribute to the design of evidence-based agricultural policies: lessons from Uganda by Pali, P. N., Schut, M., Kibwika, P., Wairegi, L., Yami, M., van Asten, P. J. A., Manyong, V. M.

“…Agricultural policies in sub-Saharan Africa have paid insufficient attention to sustainable intensification. In Uganda, agricultural productivity has stagnated…”
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Allometric growth relationships of East Africa highland bananas (Musa AAA-EAHB) cv. Kisansa and Mbwazirume by Nyombi, K, van Asten, P.J.A, Leffelaar, P.A, Corbeels, M, Kaizzi, C.K, Giller, K.E

“…Highland bananas are an important staple food in East Africa, but there is little information on their physiology and growth patterns. This makes it difficult…”
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Influence of plant density on variability of soil fertility and nutrient budgets in low input East African highland banana (Musa spp. AAA-EA) cropping systems by Ndabamenye, T., Vanlauwe, B., Van Asten, P. J. A., Blomme, G., Swennen, R., Uzayisenga, B., Annandale, J. G., Barnard, R. O.

“…The productivity of East African highland (EAH) banana cropping systems is declining, particularly in areas with low inherent soil fertility. Soil fertility…”
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Production gradients in smallholder banana (cv. Giant Cavendish) farms in Central Kenya by Okumu, M.O., van Asten, P.J.A., Kahangi, E., Okech, S.H., Jefwa, J., Vanlauwe, B.

“…▶ Bunch yields were higher nearer homesteads, and higher than previously reported. ▶ There was a gradient of Soil K and Tissue K levels, declining from the…”
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Coffea arabica yields decline in Tanzania due to climate change: Global implications by Craparo, A.C.W., Van Asten, P.J.A., Läderach, P., Jassogne, L.T.P., Grab, S.W.

“…•Climate trends in the Coffea arabica growing regions of Tanzania are investigated.•Substantial increases in all three temperature variables (Tmin, Tmax,…”
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Quantifying bunch weights of the East African Highland bananas ( Musa spp. AAA-EA) using non-destructive field observations by Wairegi, L.W.I., van Asten, P.J.A., Tenywa, M., Bekunda, M.

“…In banana on-farm studies in the East African Highlands, quantification of production has been difficult because plants are at different stages of development…”
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The influence of the topographic position within highlands of Western Rwanda on the interactions between banana ( Musa spp. AAA-EA), parasitic nematodes and soil factors by Gaidashova, S.V., van Asten, P.J.A., Delvaux, B., De Waele, D.

“…Soil properties vary according to the topography. They affect water uptake and root exploration in the soil. Consequently, they may also influence the spread…”
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Evaluating coffee yield gaps and important biotic, abiotic, and management factors limiting coffee production in Uganda by Wang, N., Jassogne, L., van Asten, P.J.A., Mukasa, D., Wanyama, I., Kagezi, G., Giller, K.E.

“…•We identified coffee yield gaps and production constraints in five regions of Uganda.•We found a large yield gap for both Robusta and Arabica coffee.•The…”
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Elaborating institutional arrangements to better enhance sustainable crop intensification in Uganda: A farmers’ perspective by Pali, P.N., Tebeka, Y.A., Schut, M., Mangheni, M.N., Wairegi, L.W., Manyong, V.M., van Asten, P.J.A.

“…Weak and inefficient institutional arrangements have been identified as a major cause of the slow pace of agricultural growth in developing countries…”
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Closing the cassava yield gap: An analysis from smallholder farms in East Africa by Fermont, A.M., van Asten, P.J.A., Tittonell, P., van Wijk, M.T., Giller, K.E.

“…Cassava yields in Africa are small and it remains unclear which factors most limit yields. Using a series of farm surveys and on-farm and on-station trials in…”
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Agronomic and economic benefits of coffee–banana intercropping in Uganda’s smallholder farming systems by van Asten, P.J.A, Wairegi, L.W.I, Mukasa, D, Uringi, N.O

“…► Yields did not differ between mono-crops and intercrops for both coffee types. ► Intercrops had higher banana yields than mono-crops in Arabica growing…”
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The effect of irrigated rice cropping on the alkalinity of two alkaline rice soils in the Sahel by van Asten, P.J.A, van 't Zelfde, J.A, van der Zee, S.E.A.T.M, Hammecker, C

“…Irrigated rice cropping is practiced to reclaim alkaline-sodic soils in many parts of the world. This practice is in apparent contrast with earlier studies in…”
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Short- and medium-term impact of manual tillage and no-tillage with mulching on banana roots and yields in banana-bean intercropping systems in the East African Highlands by Muliele, M.T., Bielders, C.L., van Asten, P.J.A.

“…•Tillage for sowing intercrops in banana plots induces severe damage to banana cord roots.•Manual tillage cuts up to 63% of the roots in the top 0.1m compared…”
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Nutrient imbalance and yield limiting factors of low input East African highland banana (Musa spp. AAA-EA) cropping systems by Ndabamenye, T., Van Asten, P.J.A., Blomme, G., Vanlauwe, B., Uzayisenga, B., Annandale, J.G., Barnard, R.O.

“…•Nutrient imbalance and yield gap were investigated under small-scale, low-input banana systems.•K, Mg and P were the most deficient elements in areas with low…”
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Mineral fertilizer response and nutrient use efficiencies of East African highland banana ( Musa spp., AAA-EAHB, cv. Kisansa) by Nyombi, K., van Asten, P.J.A., Corbeels, M., Taulya, G., Leffelaar, P.A., Giller, K.E.

“…Poor yields of East African highland bananas ( Musa spp., AAA-EAHB) on smallholder farms have often been attributed to problems of poor soil fertility. We…”
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