But Cuba has other challenges beyond the production system; it suffers from salinity, erosion, poor drainage, low fertility, acidity, low organic material content, poor retention of humidity, and desertification.
This is because of a combination of factors: a dysfunctional state rationing system, deforestation, soil erosion, poor road conditions and a lack of fertilizers, fuel, pumps and other farm machinery.
Other complicating factors include massive erosion and poor soils, along with agricultural markets (where farmers ought to be able to buy supplies and sell their crops) that barely function.
If such lands were stable, vegetated, and did not produce excessive erosion or poor water quality, the "reclamation" process that produced such lands was approved by regulators.
Currently, the knowledge base of coastal erosion is poor and this serves to hinder the current and future management of the coast.
Every farmer and property owner can contribute to rebuilding/re-growing soil carbon and organic matter stocks, which according to the USDA, have become depleted by 60-95 percenthroughgh erosion and poor farming and livestock grazing practices.
Bone marrow edema (BME) visible on magnetic resonance imaging (MRI) is clinically meaningful in both early and late RA as it associates with future development of bone erosions and poor functional outcomes.
MRI-based BM involvement in the form of BME is a common feature in late and early RA, where it associates with disease activity and, most importantly, with future development of bone erosions and poor functional outcomes (for a review on BME in RA, see [ 9, 10] and the manuscript by FM McQueen in this edition of Arthritis Research and Therapy).
Using traditional machining method to manufacture spur gear has some drawbacks and insufficiencies, such as severe erosion and abrasion, poor strength and service life, lower transmission efficiency and huge material waste, etc. which satisfies the requirements poorly in complex and bad environment of the coal mine (Jing and Xing 2006; Can and Misirli 2008; Lee et al. 2011).
Compared with the native conditions, good golf course management was simulated to increase annual nitrogen (N) yield by 148% and phospohorus (P) yield by 24% with little impact on runoff or erosion, while a poor management scenario increased the N yield by 380%.
Similarly, a Nigerian study by (Oruk et al. 2012) reported greater soil erosion in lands with poor vegetation cover.
