Effect of leaf harvesting frequency on growth and yield of sweetpotato in the Lake Zone of Tanzania

Kiozya, H.; Mtunda, K.; Kapinga, R.; Chirimi, B.; Rwiza, E.

doi:10.4314/acsj.v9i1.27629

Cited by 8 publications

(13 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Consistent with this suggestion, Nwinyi (1992) also reported that removal of sweet potato vines during growth reduced the supply of photosynthate in the remaining period of growth of the plant with an eventual reduction in tuberous root yield. Corroborating the results of this study, Kiozya et al (2001) and Nguyen and Bautista (1999) also reported that harvesting the vines of sweet potato reduced yields of tuberous roots. Similarly, Stathers et al (2005) reported that tuberous root weight of sweet potato was significantly reduced when cuttings were taken from young plants during early growth for propagation.…”

Section: Fresh and Dry Tuberous Root Yieldssupporting

confidence: 82%

“…Increasing recognition of the great potential of the sweet potato crop as a nutritious food for humans and animals has resulted in intensified research efforts to enhance its production and consumption in recent decades (Yamakawa and Yoshimoto, 2002). Previous research showed that vine harvesting of sweet potato reduced the yield of tuberous roots (Nguyen and Bautista, 1999;Kiozya et al, 2001;An et al, 2003). Age at harvest is an important management factor that affects sweet potato fodder and tuberous root yield as well as quality (An et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of planting methods and vine harvesting on shoot and tuberous root yields of sweet potato [Ipomoea batatas (L.) Lam.] in the Afar region of Ethiopia

Ahmed¹

2012

Afr. J. Agric. Res.

View full text Add to dashboard Cite

In the arid pastoralist Afar region of Ethiopia, scarcity of food and fodder owing to recurring droughts is a major problem imperilling livestock and human survival. Therefore, sweet potato production as a dual purpose food-security crop has been steadily increasing in the region. However, there is scarcity of information on agronomic practices that may lead to optimum production of tuberous roots and shoots. Therefore, a field experiment was conducted at Werer Agricultural Research Centre with the objective of evaluating the influence of planting methods and vine harvesting time on yields of tuberous roots and shoots of the crop plant. The treatments consisted of three planting methods (ridge, flat, and sunken), and three vine harvesting times (45, 75 and 105 days after planting including one control treatment without vine harvesting). The experiment was laid out as a randomized complete block design in a factorial arrangement and replicated four times. The results revealed that planting sweet potato on ridges and harvesting the vines 105 days after planting (when about 60% of the growth phase of the plant was completed) led to optimum production of herbage for fodder without compromising yield of tuberous roots.

show abstract

Section: Fresh and Dry Tuberous Root Yieldssupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Effect of planting methods and vine harvesting on shoot and tuberous root yields of sweet potato [Ipomoea batatas (L.) Lam.] in the Afar region of Ethiopia

Ahmed¹

2012

Afr. J. Agric. Res.

View full text Add to dashboard Cite

show abstract

“…Nwinyi (1992) has reported that removal of sweet potato vines during growth reduced the supply of photosynthetic products in the remaining period of growth of the plant with an eventual reduction in tuber yields. Corroborating the results of this study, Klozya et al;(2001) and Nguyen and Bautista (1999) also reported that harvesting the vines from successive plant for further planting reduced yields of tubers of sweet potato. Similarly, Stathers et al;(2005) reported that tuber yield of sweet potato was significantly reduced when cuttings were taking from young plants during early growth for propagation.…”

Section: Effects Of Vines Production Methods On Yield and Yield Composupporting

confidence: 81%

Influence of vines production methods and their combination with time of harvest on tuber quality and yield of sweet potato

On¹

2017

Int. Res. J. Agric. Sci. Soil

View full text Add to dashboard Cite

Availability of sufficient sweet potato vines is usually a problem during the planting season because most of the sweet potato vines from the previous harvest dry up before the next planting season. Also, in the process whereby the farmers are resulted to the prolonged multiplication of old vines for the planting of the new fields, the yield and quality of harvested tubers are reduced due to vines degeneration, diseases and pests infestation. Therefore, trials were conducted at Ajase-Ipo community of Irepodun local government area in Kwara state and Ifon community of Ose local government area in Ondo state of Nigeria in 2008 and 2009 to investigate vines producing methods and and their combination with different time of harvest. Three vines production methods investigated are nurseries, vines from sprouts roots and vines from successive planting (Farmers' practice) and the harvesting time of sweet potato are 120, 140, 160 and 180 days after planting (DAP). The results indicated that, the effects of the vines production methods on the weight of fresh marketable tubers, weight of fresh unmarketable tubers, weight of total fresh tubers, tuber dry matter content and harvest index were significant. At both locations, nursery method gave the significantly highest values (15.2 and 13.8 t/ha) for marketable tubers in 2008 and 2009 at Ajase Ipo and (17.4 and 15.2 t/ha) at Ifon compared to sprouted roots and successive planting methods (Farmers' practice). The combination of the methods of vines production and time of harvest effects significantly affected the average weight of marketable tubers at Ajase Ipo and Ifon. Nursery method gave the significantly highest values [(13.5 and 15.8 t/ha), (11.8 and 12.9 t/ha), (9.4 and 9.8 t/ha) and (8.4 and 7.9 t/ha)] at Ajase Ipo and Ifon at 120, 140, 160, and 180 days after planting (DAP) respectively compared to sprouted roots and successive planting methods. The combination of the methods of vines production and the time of harvest effects significantly affected the average weight of weevil free marketable tubers and badly infected marketable tubers at Ajase Ipo and Ifon. Consistently, nursery method gave the significantly highest values [(13.5 and 15.8 t/ha), (12. 9 and 14.8 t/ha), (10.3 and 13.1 t/ha) and (8.6 and 11.8 t/ha)] weevil free marketable tubers at Ajase Ipo and Ifon at 120, 140, 160, and 180 DAP respectively compared to sprouted roots and successive planting methods that were not significantly different from each other. But, the least values [(6.9 and 7.3 t/ha), (5.8 and 4.1 t/ha), (4.8 and 3.1 t/ha) and (1.6 and 2.3 t/ha)] at Ajase Ipo and Ifon at 120, 140, 160, and 180 DAP respectively were recorded for successive planting method.

show abstract

“…They found that tilled soils, especially mound significantly increased sweet potato root yield compared with flat planting. Whereas, Midmore [22] had found no significant differences in the root yield of sweet potato under row-ridge, two-row bed, on-the-flat and row furrow. They also use varied seedbed types to cultivate the crop.…”

Section: Introductionmentioning

confidence: 91%

Effect of Seedbed Types and time of Vine Harvesting on Shoot and Tuber Yields of Sweet Potato [Ipomoea batatas (L.) Lam.] in South-south, Nigeria

Gbaraneh

Wilson

2021

JEAI

View full text Add to dashboard Cite

A field experiment was conducted at Rivers Institute of Agricultural Research and Training (RIART), Rivers State University, Port Harcourt, Nigeria with the objective of evaluating the influence of seedbed types and vine harvesting time on shoot and tuber yields of sweet potato and make recommendations for optimal and sustainable production. The treatments consisted of three seedbed types (ridge, flat, and mound), and four vine harvesting time (8, 12, 16 and 20 weeks after planting). The experiment was laid out as a 3 x 4 in factorial arrangement fitted into a randomized complete block design (RCBD) and replicated three times. The results revealed that planting of sweet potato on ridge produced the highest root tuber yield followed by mound seedbeds; planting on flat seedbed produced the highest shoot (vine) and lowest tuber yields. While planting on ridge seedbed and harvesting the vines 16 weeks after planting (when about 80% of the growth phase of the plant was completed) produced optimum shoot yield which could be used as fodder with no significant effect on root tuber yield. In general, vine harvesting during active growth phase of the sweet potato plant seriously depressed tuber yield more than it affected shoot production. These results therefore stand as our recommendations for sweet potato production in the South-south zone of Nigeria.

show abstract

Effect of leaf harvesting frequency on growth and yield of sweetpotato in the Lake Zone of Tanzania

Cited by 8 publications

References 0 publications

Effect of planting methods and vine harvesting on shoot and tuberous root yields of sweet potato [Ipomoea batatas (L.) Lam.] in the Afar region of Ethiopia

Effect of planting methods and vine harvesting on shoot and tuberous root yields of sweet potato [Ipomoea batatas (L.) Lam.] in the Afar region of Ethiopia

Influence of vines production methods and their combination with time of harvest on tuber quality and yield of sweet potato

Effect of Seedbed Types and time of Vine Harvesting on Shoot and Tuber Yields of Sweet Potato [Ipomoea batatas (L.) Lam.] in South-south, Nigeria

Contact Info

Product

Resources

About